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ENGINE LUBRICATION SYSTEM


B ENGINE

                                                                                                                                                                A




                                                            ENGINE LUBRICATION SYSTEM
                                                                                                    SECTION                   LU                                LU



                                                                                                                                                                C


                                                                                                                                                                D


                                                                                                                                                                E
                                                                 CONTENTS
PRECAUTIONS ......................................................... 2.         OIL COOLER ........................................................... 10
                                                                                                                                                       .        F
 Precautions for Liquid Gasket ................................. 2     .          Removal and Installation ....................................... 10  .
   REMOVAL OF LIQUID GASKET SEALING ......... 2                        .            REMOVAL .......................................................... 10
                                                                                                                                                       .
   LIQUID GASKET APPLICATION PROCEDURE 2                               .....        INSPECTION AFTER REMOVAL ...................... 10                 .        G
PREPARATION .......................................................... 3
                                                                       .            INSTALLATION .................................................. 11 .
 Special Service Tools .............................................. 3.            INSPECTION AFTER INSTALLATION ............... 11                   .
 Commercial Service Tools ....................................... 3    .         OIL PUMP ................................................................ 12
                                                                                                                                                       .
                                                                                                                                                                H
LUBRICATION SYSTEM ........................................... 4       .          Removal and Installation ....................................... 12  .
 Lubrication Circuit ................................................... 4
                                                                       .            REMOVAL .......................................................... 12
                                                                                                                                                       .
 System Drawing ...................................................... 5
                                                                       .            INSTALLATION .................................................. 12 .
ENGINE OIL .............................................................. 6
                                                                       .          Disassembly and Assembly ................................... 12      .         I
 Inspection ................................................................ 6
                                                                       .            DISASSEMBLY .................................................. 12  .
   OIL LEVEL ........................................................... 6
                                                                       .            INSPECTION AFTER DISASSEMBLY ............... 12                    .
   OIL APPEARANCE .............................................. 6     .            ASSEMBLY ........................................................ 13
                                                                                                                                                       .         J
   OIL LEAKAGE ...................................................... 6.         SERVICE DATA AND SPECIFICATIONS (SDS) ..... 14                        .
   OIL PRESSURE CHECK ..................................... 6          .          Standard and Limit ................................................. 14
                                                                                                                                                       .
 Changing Engine Oil ............................................... 8 .            OIL PRESSURE ................................................. 14  .
                                                                                                                                                                K
OIL FILTER ................................................................ 9
                                                                       .            OIL PUMP .......................................................... 14
                                                                                                                                                       .
 Removal and Installation ......................................... 9  .            REGULATOR VALVE ......................................... 14       .
   REMOVAL ............................................................ 9
                                                                       .            OIL CAPACITY ................................................... 14.
   INSTALLATION .................................................... 9 .          Tightening Torque .................................................. 14
                                                                                                                                                       .         L



                                                                                                                                                                M




Revision; 2004 April                                                        LU-1                                                     2003 G35 Coupe
                                               PRECAUTIONS

PRECAUTIONS                                                                       PFP:00001

Precautions for Liquid Gasket                                                         ABS004S1

REMOVAL OF LIQUID GASKET SEALING
q    After removing the mounting bolts and nuts, separate the mating
     surface using a seal cutter and remove the liquid gasket sealing.
     CAUTION:
     Be careful not to damage the mating surfaces.
q    In areas where the cutter is difficult to use, use a plastic hammer
     to lightly tap the area where the liquid gasket is applied.
     CAUTION:
     If for some unavoidable reason a tool such as a flat-bladed
     screwdriver is used, be careful not to damage the mating
     surfaces.
                                                                                   PBIC0002E


LIQUID GASKET APPLICATION PROCEDURE
1.   Using a scraper, remove the old liquid gasket adhering to the
     gasket application surface and the mating surface.
     q Remove the liquid gasket completely from the groove of the
        gasket application surface, mounting bolts, and bolt holes.
2.   Wipe the gasket application surface and the mating surface with
     white gasoline (lighting and heating use) to remove adhering
     moisture, grease and foreign materials.
3.   Attach the liquid gasket tube to the tube presser.
     Use Genuine RTV Silicone Sealant or equivalent. Refer to
     GI-47, "RECOMMENDED CHEMICAL PRODUCTS AND
     SEALANTS".                                                                    PBIC0003E


4.   Apply the liquid gasket without breaks to the specified location
     with the specified dimensions.
     q If there is a groove for the liquid gasket application, apply the
        gasket to the groove.




                                                                                   EMA0622D




     q   As for the bolt holes, normally apply the gasket inside the
         holes. Occasionally, it should be applied outside the holes.
         Make sure to read the text of service manual.
     q   Within five minutes of gasket application, install the mating
         component.
     q   If the liquid gasket protrudes, wipe it off immediately.
     q   Do not retighten after the installation.
     q   After 30 minutes or more have passed from the installation, fill
         the engine oil and engine coolant.
         CAUTION:                                                                  SEM159F
         If there are specific instructions in this manual, observe
         them.




Revision; 2004 April                                   LU-2                 2003 G35 Coupe
                                                       PREPARATION

PREPARATION                                                                                                                   PFP:00002
                                                                                                                                            A
Special Service Tools                                                                                                            ABS002XA

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
  Tool number                                                                                                                               LU
  (Kent-Moore No.)                                                                       Description
  Tool name

  ST25051001                                                                             Measuring oil pressure
                                                                                                                                            C
  (J25695-1)                                                                             Maximum measuring range: 2,452 kPa (25
  Oil pressure gauge                                                                     kg/cm2 , 356 psi)

                                                                                                                                            D

                                                                         NT050


  ST25052000                                                                             Adapting oil pressure gauge to upper oil pan
                                                                                                                                            E
  (J25695-2)
  Hose
                                                                                                                                            F


                                                                         S-NT559
                                                                                                                                            G
  KV10115801                                                                             Removing oil filter
  (J38956)                                                                               a: 64.3 mm (2.531 in)
  Oil filter wrench
                                                                                                                                            H



                                                                                                                                             I
                                                                         S-NT375


  WS39930000                                                                             Pressing the tube of liquid gasket
  (      --           )
  Tube presser                                                                                                                               J



                                                                                                                                            K
                                                                         NT052



                                                                                                                                             L
Commercial Service Tools                                                                                                         ABS002XB



  Tool name                                                                              Description                                        M
  Deep socket                                                                            Removing and installing oil pressure switch
                                                                                         Deep socket 27 mm (1.06 in)




                                                                         NT818


  Power tools                                                                            Loosening nuts and bolts




                                                                         PBIC0190E




Revision; 2004 April                                            LU-3                                                2003 G35 Coupe
                       LUBRICATION SYSTEM

LUBRICATION SYSTEM                                PFP:15010

Lubrication Circuit                                     ABS0036P




                                                 PBIC1933E




Revision; 2004 April          LU-4          2003 G35 Coupe
                       LUBRICATION SYSTEM

System Drawing                                          ABS0036Q

                                                                   A


                                                                   LU



                                                                   C


                                                                   D


                                                                   E



                                                                   F


                                                                   G


                                                                   H



                                                 PBIC2071E          I


                                                                    J



                                                                   K


                                                                    L



                                                                   M




Revision; 2004 April          LU-5          2003 G35 Coupe
                                                 ENGINE OIL

ENGINE OIL                                                                                          PFP:KLA92

Inspection                                                                                               ABS002XE

OIL LEVEL
NOTE:
q  Before starting the engine, put vehicle horizontally and check
   the oil level. If the engine is already started, stop it and allow 10
   minutes before checking.
q  Check that the oil level is within the range as indicated on the
   dipstick.
q  If it is out of range, add oil as necessary.




                                                                                                      PBIC0249E



NOTE:
When checking oil level, insert level gauge with its tip aligned with oil
level gauge guide on cylinder head. (In figure, air cleaner case and
air duct are removed.)




                                                                                                      KBIA1343E


OIL APPEARANCE
q   Check the oil for white turbidity or heavy contamination.
q   If engine oil becomes turbid and white, it is highly probable that it is contaminated with engine coolant.
    Repair or replace damaged parts.
OIL LEAKAGE
Check for oil leakage around the following areas:
q  Oil pan
q  Oil pan drain plug
q  Oil pressure switch
q  Oil filter
q  Oil cooler
q  Intake valve timing control cover and intake valve timing control solenoid valve
q  Mating surface between cylinder block and cylinder head
q  Mating surface between cylinder head and rocker cover
q  Mating surface between front timing chain case and rear timing chain case
q  Mating surface between rear timing chain case and cylinder block
OIL PRESSURE CHECK
WARNING:
q  Be careful not to burn yourself, as engine oil may be hot.
q  Oil pressure check should be done in "Neutral position" (M/T models) or "Parking position" (A/T
   models).
1. Check engine oil level. Refer to LU-6, "Inspection" .
2. Remove undercover with power tool.



Revision; 2004 April                                   LU-6                                  2003 G35 Coupe
                                                ENGINE OIL

3.   Disconnect oil pressure switch harness connector.
4.   Remove oil pressure switch.                                                                A


                                                                                                LU



                                                                                                C

                                                                                    PBIC0818E

                                                                                                D
5.   Install pressure gauge (special service tool).
6.   Start engine and warm it up to normal operating temperature.
7.   Check oil pressure with engine running under no-load.                                      E

            Engine speed                Approximate discharge pressure
                rpm                           kPa (kg/cm2 , psi)
                                                                                                F
              Idle speed                    More than 98 (1.0, 14)
                2,000                       More than 294 (3.0, 43)
                6,000                       More than 392 (4.0, 57)                             G
                                                                                    SLC926
     If difference is extreme, check oil passage and oil pump for oil
     leaks.
                                                                                                H
8.   After the inspections, install the oil pressure switch as follows:
a.   Remove the old liquid gasket adhering to switch and engine.
b.   Apply liquid gasket and tighten the oil pressure switch to specification.                   I
     Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-47, "RECOMMENDED CHEMICAL
     PRODUCTS AND SEALANTS" .

           : 12.3 - 17.2 N



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